@@ -24,6 +24,7 @@ enum {
IOMMU_TEST_OP_MD_CHECK_IOTLB,
IOMMU_TEST_OP_TRIGGER_IOPF,
IOMMU_TEST_OP_DEV_CHECK_CACHE,
+ IOMMU_TEST_OP_TRIGGER_VIRQ,
};
enum {
@@ -145,6 +146,9 @@ struct iommu_test_cmd {
__u32 id;
__u32 cache;
} check_dev_cache;
+ struct {
+ __u32 dev_id;
+ } trigger_virq;
};
__u32 last;
};
@@ -210,4 +214,10 @@ struct iommu_viommu_invalidate_selftest {
__u32 cache_id;
};
+#define IOMMU_VIRQ_TYPE_SELFTEST 0xbeefbeef
+
+struct iommu_viommu_irq_selftest {
+ __u32 vdev_id;
+};
+
#endif
@@ -1560,6 +1560,34 @@ static int iommufd_test_trigger_iopf(struct iommufd_ucmd *ucmd,
return 0;
}
+static int iommufd_test_trigger_virq(struct iommufd_ucmd *ucmd,
+ struct iommu_test_cmd *cmd)
+{
+ struct iommufd_device *idev;
+ struct mock_dev *mdev;
+
+ idev = iommufd_get_device(ucmd, cmd->trigger_virq.dev_id);
+ if (IS_ERR(idev))
+ return PTR_ERR(idev);
+ mdev = container_of(idev->dev, struct mock_dev, dev);
+
+ mutex_lock(&mdev->lock);
+ if (mdev->vdev_id) {
+ struct iommu_viommu_irq_selftest test = {
+ .vdev_id = mdev->vdev_id->id,
+ };
+
+ iommufd_viommu_report_irq(mdev->vdev_id->viommu,
+ IOMMU_VIRQ_TYPE_SELFTEST,
+ &test, sizeof(test));
+ }
+ mutex_unlock(&mdev->lock);
+
+ iommufd_put_object(ucmd->ictx, &idev->obj);
+
+ return 0;
+}
+
void iommufd_selftest_destroy(struct iommufd_object *obj)
{
struct selftest_obj *sobj = container_of(obj, struct selftest_obj, obj);
@@ -1641,6 +1669,8 @@ int iommufd_test(struct iommufd_ucmd *ucmd)
cmd->dirty.flags);
case IOMMU_TEST_OP_TRIGGER_IOPF:
return iommufd_test_trigger_iopf(ucmd, cmd);
+ case IOMMU_TEST_OP_TRIGGER_VIRQ:
+ return iommufd_test_trigger_virq(ucmd, cmd);
default:
return -EOPNOTSUPP;
}
The handler will get vdev_id structure from the given mdev and convert it to its per-viommu virtual device ID to mimic a real IOMMU driver. Signed-off-by: Nicolin Chen <nicolinc@nvidia.com> --- drivers/iommu/iommufd/iommufd_test.h | 10 ++++++++++ drivers/iommu/iommufd/selftest.c | 30 ++++++++++++++++++++++++++++ 2 files changed, 40 insertions(+)